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Use standard UBO and fix/stylize the code

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This commit is contained in:
FernandoS27 2018-10-10 16:34:15 -04:00
parent 17315cee16
commit 59a004f915
8 changed files with 51 additions and 91 deletions
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15
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@ -323,8 +323,6 @@ void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
current_texture_bindpoint = SetupTextures(static_cast<Maxwell::ShaderStage>(stage), shader,
primitive_mode, current_texture_bindpoint);
SetupAlphaTesting(shader);
// When VertexA is enabled, we have dual vertex shaders
if (program == Maxwell::ShaderProgram::VertexA) {
// VertexB was combined with VertexA, so we skip the VertexB iteration
@ -882,19 +880,6 @@ u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, Shader& shader,
return current_unit + static_cast<u32>(entries.size());
}
void RasterizerOpenGL::SetupAlphaTesting(Shader& shader) {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
u32 func = static_cast<u32>(regs.alpha_test_func);
// Normalize the gl variants of opCompare to be the same as the normal variants
u32 op = static_cast<u32>(Tegra::Engines::Maxwell3D::Regs::ComparisonOp::Never);
if (func >= op) {
func = func - op + 1U;
}
shader->SetAlphaTesting(regs.alpha_test_enabled == 1, regs.alpha_test_ref, func);
}
void RasterizerOpenGL::SyncViewport() {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
const MathUtil::Rectangle<s32> viewport_rect{regs.viewport_transform[0].GetRect()};

3
src/video_core/renderer_opengl/gl_rasterizer.h
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@ -132,9 +132,6 @@ private:
u32 SetupTextures(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage, Shader& shader,
GLenum primitive_mode, u32 current_unit);
/// Syncs the alpha test state to match the guest state
void SetupAlphaTesting(Shader& shader);
/// Syncs the viewport to match the guest state
void SyncViewport();

20
src/video_core/renderer_opengl/gl_shader_cache.cpp
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@ -94,10 +94,6 @@ CachedShader::CachedShader(VAddr addr, Maxwell::ShaderProgram program_type)
// Store shader's code to lazily build it on draw
geometry_programs.code = program_result.first;
}
if (program_type == Maxwell::ShaderProgram::Fragment) {
SaveAlphaTestingLocations();
}
}
GLuint CachedShader::GetProgramResourceIndex(const GLShader::ConstBufferEntry& buffer) {
@ -138,22 +134,6 @@ GLuint CachedShader::LazyGeometryProgram(OGLProgram& target_program,
return target_program.handle;
};
void CachedShader::SetAlphaTesting(const bool enable, const float ref, const u32 func) {
if (program_type == Maxwell::ShaderProgram::Fragment) {
glProgramUniform1ui(program.handle, alpha_test.enable_loc,
(enable ? 1 : 0));
glProgramUniform1f(program.handle, alpha_test.ref_loc,
ref);
glProgramUniform1ui(program.handle, alpha_test.func_loc, func);
}
}
void CachedShader::SaveAlphaTestingLocations() {
alpha_test.enable_loc = glGetUniformLocation(program.handle, "alpha_testing_enable");
alpha_test.ref_loc = glGetUniformLocation(program.handle, "alpha_testing_ref");
alpha_test.func_loc = glGetUniformLocation(program.handle, "alpha_testing_func");
}
Shader ShaderCacheOpenGL::GetStageProgram(Maxwell::ShaderProgram program) {
const VAddr program_addr{GetShaderAddress(program)};

10
src/video_core/renderer_opengl/gl_shader_cache.h
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@ -73,15 +73,11 @@ public:
/// Gets the GL uniform location for the specified resource, caching as needed
GLint GetUniformLocation(const GLShader::SamplerEntry& sampler);
void SetAlphaTesting(const bool enable, const float ref, const u32 func);
private:
/// Generates a geometry shader or returns one that already exists.
GLuint LazyGeometryProgram(OGLProgram& target_program, const std::string& glsl_topology,
const std::string& debug_name);
void SaveAlphaTestingLocations();
VAddr addr;
Maxwell::ShaderProgram program_type;
GLShader::ShaderSetup setup;
@ -102,12 +98,6 @@ private:
OGLProgram triangles_adjacency;
} geometry_programs;
struct {
GLint enable_loc;
GLint ref_loc;
GLint func_loc;
} alpha_test;
std::map<u32, GLuint> resource_cache;
std::map<u32, GLint> uniform_cache;
};

46
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -643,13 +643,6 @@ private:
';');
}
declarations.AddNewLine();
if (stage == Maxwell3D::Regs::ShaderStage::Fragment) {
declarations.AddLine("uniform bool alpha_testing_active;");
declarations.AddLine("uniform float alpha_testing_ref;");
declarations.AddLine("uniform uint alpha_testing_func;");
}
declarations.AddNewLine();
}
/// Generates declarations used for geometry shaders.
@ -1271,17 +1264,20 @@ private:
ASSERT_MSG(header.ps.omap.sample_mask == 0, "Samplemask write is unimplemented");
shader.AddLine("if (alpha_testing_active) {");
shader.AddLine("if (alpha_test[0] != 0) {");
++shader.scope;
// We start on the register containing the alpha value in the first RT.
u32 current_reg = 3;
for (u32 render_target = 0; render_target < Maxwell3D::Regs::NumRenderTargets;
++render_target) {
// TODO(Blinkhawk): verify the behavior of alpha testing on hardware when
// multiple render targets are used.
if (header.ps.IsColorComponentOutputEnabled(render_target, 0) ||
header.ps.IsColorComponentOutputEnabled(render_target, 1) ||
header.ps.IsColorComponentOutputEnabled(render_target, 2) ||
header.ps.IsColorComponentOutputEnabled(render_target, 3)) {
shader.AddLine(fmt::format(
"if (AlphaFunc({}, alpha_testing_ref, alpha_testing_func)) discard;",
"if (AlphaFunc({})) discard;",
regs.GetRegisterAsFloat(current_reg)));
current_reg += 4;
}
@ -3506,38 +3502,6 @@ private:
declarations.AddLine("bool " + pred + " = false;");
}
declarations.AddNewLine();
GenerateFunctionDeclarations();
}
void GenerateFunctionDeclarations() {
if (stage == Maxwell3D::Regs::ShaderStage::Fragment) {
declarations.AddLine("bool AlphaFunc(in float value, in float ref, in uint func) {");
declarations.scope++;
declarations.AddLine("switch (func) {");
declarations.scope++;
declarations.AddLine("case 1:");
declarations.AddLine("return false;");
declarations.AddLine("case 2:");
declarations.AddLine("return value < ref;");
declarations.AddLine("case 3:");
declarations.AddLine("return value == ref;");
declarations.AddLine("case 4:");
declarations.AddLine("return value <= ref;");
declarations.AddLine("case 5:");
declarations.AddLine("return value > ref;");
declarations.AddLine("case 6:");
declarations.AddLine("return value != ref;");
declarations.AddLine("case 7:");
declarations.AddLine("return value >= ref;");
declarations.AddLine("case 8:");
declarations.AddLine("return true;");
declarations.AddLine("default:");
declarations.AddLine("return false;");
declarations.scope--;
declarations.AddLine('}');
declarations.scope--;
declarations.AddLine('}');
}
}
private:

29
src/video_core/renderer_opengl/gl_shader_gen.cpp
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@ -29,6 +29,7 @@ layout(std140) uniform vs_config {
vec4 viewport_flip;
uvec4 instance_id;
uvec4 flip_stage;
uvec4 alpha_test;
};
)";
@ -105,6 +106,7 @@ layout (std140) uniform gs_config {
vec4 viewport_flip;
uvec4 instance_id;
uvec4 flip_stage;
uvec4 alpha_test;
};
void main() {
@ -142,8 +144,33 @@ layout (std140) uniform fs_config {
vec4 viewport_flip;
uvec4 instance_id;
uvec4 flip_stage;
uvec4 alpha_test;
};
bool AlphaFunc(in float value) {
float ref = uintBitsToFloat(alpha_test[2]);
switch (alpha_test[1]) {
case 1:
return false;
case 2:
return value < ref;
case 3:
return value == ref;
case 4:
return value <= ref;
case 5:
return value > ref;
case 6:
return value != ref;
case 7:
return value >= ref;
case 8:
return true;
default:
return false;
}
}
void main() {
exec_fragment();
}
@ -152,4 +179,4 @@ void main() {
out += program.first;
return {out, program.second};
}
} // namespace OpenGL::GLShader
} // namespace OpenGL::GLShader

11
src/video_core/renderer_opengl/gl_shader_manager.cpp
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@ -16,6 +16,17 @@ void MaxwellUniformData::SetFromRegs(const Maxwell3D::State::ShaderStageInfo& sh
viewport_flip[0] = regs.viewport_transform[0].scale_x < 0.0 ? -1.0f : 1.0f;
viewport_flip[1] = regs.viewport_transform[0].scale_y < 0.0 ? -1.0f : 1.0f;
u32 func = static_cast<u32>(regs.alpha_test_func);
// Normalize the gl variants of opCompare to be the same as the normal variants
u32 op_gl_variant_base = static_cast<u32>(Tegra::Engines::Maxwell3D::Regs::ComparisonOp::Never);
if (func >= op_gl_variant_base) {
func = func - op_gl_variant_base + 1U;
}
alpha_test.enabled = regs.alpha_test_enabled;
alpha_test.func = func;
alpha_test.ref = regs.alpha_test_ref;
// We only assign the instance to the first component of the vector, the rest is just padding.
instance_id[0] = state.current_instance;

8
src/video_core/renderer_opengl/gl_shader_manager.h
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@ -22,8 +22,14 @@ struct MaxwellUniformData {
alignas(16) GLvec4 viewport_flip;
alignas(16) GLuvec4 instance_id;
alignas(16) GLuvec4 flip_stage;
struct alignas(16) {
GLuint enabled;
GLuint func;
GLfloat ref;
GLuint padding;
} alpha_test;
};
static_assert(sizeof(MaxwellUniformData) == 48, "MaxwellUniformData structure size is incorrect");
static_assert(sizeof(MaxwellUniformData) == 64, "MaxwellUniformData structure size is incorrect");
static_assert(sizeof(MaxwellUniformData) < 16384,
"MaxwellUniformData structure must be less than 16kb as per the OpenGL spec");